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NFSD: Get response size before operation for all RPCs
NFSD usess PAGE_SIZE as the reply size estimate for RPCs which don't support op_rsize_bop(), A PAGE_SIZE (4096) is larger than many real response sizes, eg, access (op_encode_hdr_size + 2), seek (op_encode_hdr_size + 3). This patch just adds op_rsize_bop() for all RPCs getting response size. An overestimate is generally safe but the tighter estimates are probably better. Signed-off-by: Kinglong Mee <kinglongmee@gmail.com> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
This commit is contained in:
Kinglong Mee
J. Bruce Fields
parent
827433801c
commit
2282cd2c05
@ -1842,6 +1842,12 @@ static inline u32 nfsd4_status_stateid_rsize(struct svc_rqst *rqstp, struct nfsd
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return (op_encode_hdr_size + op_encode_stateid_maxsz)* sizeof(__be32);
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}
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static inline u32 nfsd4_access_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
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{
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/* ac_supported, ac_resp_access */
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return (op_encode_hdr_size + 2)* sizeof(__be32);
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}
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static inline u32 nfsd4_commit_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
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{
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return (op_encode_hdr_size + op_encode_verifier_maxsz) * sizeof(__be32);
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@ -1896,6 +1902,11 @@ static inline u32 nfsd4_getattr_rsize(struct svc_rqst *rqstp,
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return ret;
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}
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static inline u32 nfsd4_getfh_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
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{
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return (op_encode_hdr_size + 1) * sizeof(__be32) + NFS4_FHSIZE;
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}
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static inline u32 nfsd4_link_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
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{
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return (op_encode_hdr_size + op_encode_change_info_maxsz)
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@ -1937,6 +1948,11 @@ static inline u32 nfsd4_readdir_rsize(struct svc_rqst *rqstp, struct nfsd4_op *o
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XDR_QUADLEN(rlen)) * sizeof(__be32);
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}
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static inline u32 nfsd4_readlink_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
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{
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return (op_encode_hdr_size + 1) * sizeof(__be32) + PAGE_SIZE;
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}
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static inline u32 nfsd4_remove_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
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{
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return (op_encode_hdr_size + op_encode_change_info_maxsz)
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@ -1956,11 +1972,23 @@ static inline u32 nfsd4_sequence_rsize(struct svc_rqst *rqstp,
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+ XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 5) * sizeof(__be32);
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}
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static inline u32 nfsd4_test_stateid_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
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{
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return (op_encode_hdr_size + 1 + op->u.test_stateid.ts_num_ids)
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* sizeof(__be32);
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}
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static inline u32 nfsd4_setattr_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
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{
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return (op_encode_hdr_size + nfs4_fattr_bitmap_maxsz) * sizeof(__be32);
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}
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static inline u32 nfsd4_secinfo_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
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{
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return (op_encode_hdr_size + RPC_AUTH_MAXFLAVOR *
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(4 + XDR_QUADLEN(GSS_OID_MAX_LEN))) * sizeof(__be32);
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}
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static inline u32 nfsd4_setclientid_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
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{
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return (op_encode_hdr_size + 2 + XDR_QUADLEN(NFS4_VERIFIER_SIZE)) *
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@ -2015,6 +2043,19 @@ static inline u32 nfsd4_copy_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
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}
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#ifdef CONFIG_NFSD_PNFS
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static inline u32 nfsd4_getdeviceinfo_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
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{
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u32 maxcount = 0, rlen = 0;
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maxcount = svc_max_payload(rqstp);
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rlen = min(op->u.getdeviceinfo.gd_maxcount, maxcount);
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return (op_encode_hdr_size +
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1 /* gd_layout_type*/ +
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XDR_QUADLEN(rlen) +
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2 /* gd_notify_types */) * sizeof(__be32);
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}
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/*
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* At this stage we don't really know what layout driver will handle the request,
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* so we need to define an arbitrary upper bound here.
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@ -2044,10 +2085,17 @@ static inline u32 nfsd4_layoutreturn_rsize(struct svc_rqst *rqstp, struct nfsd4_
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}
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#endif /* CONFIG_NFSD_PNFS */
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static inline u32 nfsd4_seek_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
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{
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return (op_encode_hdr_size + 3) * sizeof(__be32);
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}
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static struct nfsd4_operation nfsd4_ops[] = {
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[OP_ACCESS] = {
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.op_func = (nfsd4op_func)nfsd4_access,
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.op_name = "OP_ACCESS",
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.op_rsize_bop = (nfsd4op_rsize)nfsd4_access_rsize,
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},
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[OP_CLOSE] = {
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.op_func = (nfsd4op_func)nfsd4_close,
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@ -2085,6 +2133,7 @@ static struct nfsd4_operation nfsd4_ops[] = {
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[OP_GETFH] = {
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.op_func = (nfsd4op_func)nfsd4_getfh,
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.op_name = "OP_GETFH",
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.op_rsize_bop = (nfsd4op_rsize)nfsd4_getfh_rsize,
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},
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[OP_LINK] = {
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.op_func = (nfsd4op_func)nfsd4_link,
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@ -2103,6 +2152,7 @@ static struct nfsd4_operation nfsd4_ops[] = {
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[OP_LOCKT] = {
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.op_func = (nfsd4op_func)nfsd4_lockt,
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.op_name = "OP_LOCKT",
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.op_rsize_bop = (nfsd4op_rsize)nfsd4_lock_rsize,
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},
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[OP_LOCKU] = {
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.op_func = (nfsd4op_func)nfsd4_locku,
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@ -2115,15 +2165,18 @@ static struct nfsd4_operation nfsd4_ops[] = {
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.op_func = (nfsd4op_func)nfsd4_lookup,
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.op_flags = OP_HANDLES_WRONGSEC | OP_CLEAR_STATEID,
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.op_name = "OP_LOOKUP",
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.op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
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},
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[OP_LOOKUPP] = {
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.op_func = (nfsd4op_func)nfsd4_lookupp,
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.op_flags = OP_HANDLES_WRONGSEC | OP_CLEAR_STATEID,
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.op_name = "OP_LOOKUPP",
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.op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
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},
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[OP_NVERIFY] = {
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.op_func = (nfsd4op_func)nfsd4_nverify,
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.op_name = "OP_NVERIFY",
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.op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
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},
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[OP_OPEN] = {
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.op_func = (nfsd4op_func)nfsd4_open,
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@ -2181,6 +2234,7 @@ static struct nfsd4_operation nfsd4_ops[] = {
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[OP_READLINK] = {
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.op_func = (nfsd4op_func)nfsd4_readlink,
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.op_name = "OP_READLINK",
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.op_rsize_bop = (nfsd4op_rsize)nfsd4_readlink_rsize,
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},
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[OP_REMOVE] = {
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.op_func = (nfsd4op_func)nfsd4_remove,
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@ -2219,6 +2273,7 @@ static struct nfsd4_operation nfsd4_ops[] = {
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.op_func = (nfsd4op_func)nfsd4_secinfo,
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.op_flags = OP_HANDLES_WRONGSEC,
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.op_name = "OP_SECINFO",
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.op_rsize_bop = (nfsd4op_rsize)nfsd4_secinfo_rsize,
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},
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[OP_SETATTR] = {
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.op_func = (nfsd4op_func)nfsd4_setattr,
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@ -2244,6 +2299,7 @@ static struct nfsd4_operation nfsd4_ops[] = {
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[OP_VERIFY] = {
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.op_func = (nfsd4op_func)nfsd4_verify,
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.op_name = "OP_VERIFY",
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.op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
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},
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[OP_WRITE] = {
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.op_func = (nfsd4op_func)nfsd4_write,
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@ -2318,11 +2374,13 @@ static struct nfsd4_operation nfsd4_ops[] = {
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.op_func = (nfsd4op_func)nfsd4_secinfo_no_name,
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.op_flags = OP_HANDLES_WRONGSEC,
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.op_name = "OP_SECINFO_NO_NAME",
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.op_rsize_bop = (nfsd4op_rsize)nfsd4_secinfo_rsize,
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},
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[OP_TEST_STATEID] = {
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.op_func = (nfsd4op_func)nfsd4_test_stateid,
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.op_flags = ALLOWED_WITHOUT_FH,
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.op_name = "OP_TEST_STATEID",
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.op_rsize_bop = (nfsd4op_rsize)nfsd4_test_stateid_rsize,
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},
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[OP_FREE_STATEID] = {
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.op_func = (nfsd4op_func)nfsd4_free_stateid,
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@ -2336,6 +2394,7 @@ static struct nfsd4_operation nfsd4_ops[] = {
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.op_func = (nfsd4op_func)nfsd4_getdeviceinfo,
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.op_flags = ALLOWED_WITHOUT_FH,
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.op_name = "OP_GETDEVICEINFO",
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.op_rsize_bop = (nfsd4op_rsize)nfsd4_getdeviceinfo_rsize,
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},
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[OP_LAYOUTGET] = {
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.op_func = (nfsd4op_func)nfsd4_layoutget,
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@ -2385,6 +2444,7 @@ static struct nfsd4_operation nfsd4_ops[] = {
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[OP_SEEK] = {
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.op_func = (nfsd4op_func)nfsd4_seek,
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.op_name = "OP_SEEK",
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.op_rsize_bop = (nfsd4op_rsize)nfsd4_seek_rsize,
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},
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};
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@ -2429,14 +2489,11 @@ bool nfsd4_spo_must_allow(struct svc_rqst *rqstp)
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int nfsd4_max_reply(struct svc_rqst *rqstp, struct nfsd4_op *op)
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{
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struct nfsd4_operation *opdesc;
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nfsd4op_rsize estimator;
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if (op->opnum == OP_ILLEGAL)
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return op_encode_hdr_size * sizeof(__be32);
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opdesc = OPDESC(op);
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estimator = opdesc->op_rsize_bop;
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return estimator ? estimator(rqstp, op) : PAGE_SIZE;
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BUG_ON(OPDESC(op)->op_rsize_bop == NULL);
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return OPDESC(op)->op_rsize_bop(rqstp, op);
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}
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void warn_on_nonidempotent_op(struct nfsd4_op *op)
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